Add ES3 commands GetVertexAttribI{u}iv to GPU command buffer.

gpu/command_buffer/client/gles2_interface_stub_autogen.h

Index: gpu/command_buffer/client/gles2_interface_stub_autogen.h
diff --git a/gpu/command_buffer/client/gles2_interface_stub_autogen.h b/gpu/command_buffer/client/gles2_interface_stub_autogen.h
index 3430fbe56a934d5eee25d5a296b469c886ae6c18..fd5151b8d21148c423bd1411d65ddd381dae577c 100644
--- a/gpu/command_buffer/client/gles2_interface_stub_autogen.h
+++ b/gpu/command_buffer/client/gles2_interface_stub_autogen.h
@@ -302,6 +302,8 @@ void GetUniformIndices(GLuint program,
 GLint GetUniformLocation(GLuint program, const char* name) override;
 void GetVertexAttribfv(GLuint index, GLenum pname, GLfloat* params) override;
 void GetVertexAttribiv(GLuint index, GLenum pname, GLint* params) override;
+void GetVertexAttribIiv(GLuint index, GLenum pname, GLint* params) override;
+void GetVertexAttribIuiv(GLuint index, GLenum pname, GLuint* params) override;
 void GetVertexAttribPointerv(GLuint index,
                              GLenum pname,
                              void** pointer) override;